Mailinglist Archive: opensuse-factory (1578 mails)

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Re: [opensuse-factory] 12.1 IPv6 addressing issue
On 11/15/2011 05:03 PM, Rüdiger Meier wrote:
> On Wednesday 16 November 2011, Lew Wolfgang wrote:
>
>> First, why are there two address with the first 4 fields being
>> identical? The working system had only one.
> Why you get a non link local address at all? DHCP, avahi ...?
> The usual case would be that you have nothing than one local fe80::/64
> addess per NIC.

Hi Rudi

I'm certainly not a IPv6 expert, but doesn't a host negotiate with the
nearest router for non-link local addresses? There is dhcp, but IIRC
it's only IPv4. Microsoft products and Apple don't work well with
dhcpd-ipv6, IIRC.

>> Notice that the second entry has a fe08:43 as the last part
>> of the address. The 08 and 43 are in the last part of the MAC
>> address, but where's the 00?
> Link local address is not "equal" mac adress.
>
http://www.ipv6news.info/2007/07/25/how-to-form-a-link-local-address-from-mac-address/

Right. Here's the ifconfig output from the not-working RC2 system:

eth0 Link encap:Ethernet HWaddr 00:xx:E8:08:00:43
inet addr:xxx.yy.77.50 Bcast:xxx.yy.79.255 Mask:255.255.252.0
inet6 addr: xxxx:yyy:zz:76:224:e8ff:fe08:43/64 Scope:Global
inet6 addr: fe80::xxx:e8ff:fe08:43/64 Scope:Link
inet6 addr: xxxx:yyy:zz:76:54d2:36fb:2fd5:56b6/64 Scope:Global

As you can see, the link-local address is malformed given the ipv6news
information.

Should be: fe80::xxx:e8ff:fe08:00:43/64
Is: fe80::xxx:e8ff:fe08:43/64

I added the "xxx")

Notice that the first "global" address has the same problem. Could this
failure to transcribe the lower 24-bits of MAC addy?

Regards,
Lew


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